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Protists are an exceptionally diverse group of mostly single-celled eukaryotes. The organization of the microtubular cytoskeleton in protists from various evolutionary lineages has different levels of sophistication, from a network of microtubules (MTs) supporting intracellular trafficking as in Dictyostelium, to complex structures such as basal bodies and cilia/flagella enabling cell motility, and lineage-specific adaptations such as the ventral disc in Giardia. MTs building these diverse structures have specific properties partly due to the presence of tubulin post-translational modifications (PTMs). Among them there are highly evolutionarily conserved PTMs acetylation, detyrosination, (poly)glutamylation and (poly)glycylation. In some protists also less common tubulin PTMs were identified, including phosphorylation, methylation, Δ2-, Δ5- of α-tubulin, polyubiquitination, sumoylation, or S-palmitoylation. Not surprisingly, several single-celled organisms become models to study tubulin PTMs, including their effect on MT properties and discovery of the modifying enzymes. Here, we briefly summarize the current knowledge on tubulin PTMs in unicellular eukaryotes and highlight key findings in protists as model organisms.
The central polydactyly of the foot is a rare congenital disorder, and its characteristics are not well known. This study aims to investigate its disease concept.
We obtained the medical records of patients who were treated surgically for central polydactyly of the foot at our hospital during a 32-year period from 1990 to 2021 retrospectively. We compared our clinical data with other case series reports to investigate the characteristics of this disorder further.
There were 22 patients (13 males and 9 females) included in our case series. Unilateral and bilateral involvements were observed in 19 (right side 6 patients; left side 13 patients) and 3 patients, respectively. The second toe is the commonest duplicated toe (observed in 19 toes). 19 patients had distally duplicated toes (with normal metatarsal bone). Proximally duplicated toes were observed in only two patients.
The incidence of central polydactyly of the foot is almost equal among male and female, and bilateral involvements are few. As this abnormality is rarely reported, further investigations are needed to clarify the clinical presentation of central polydactyly of the foot.
The incidence of central polydactyly of the foot is almost equal among male and female, and bilateral involvements are few. As this abnormality is rarely reported, further investigations are needed to clarify the clinical presentation of central polydactyly of the foot.
To compare the effect of five days of intensive postoperative rehabilitation and early mobilization following scoliosis surgery.
Forty adolescent patients who had undergone scoliosis surgery were randomly allocated into a rehabilitation group (RG, n=20) and a mobilization group (MG, n=20). The RG received five days of intensive exercise program and early ambulation, the MG received five days of a standard gait training and early ambulation. The patients were evaluated for severity of pain using a visual analog scale, thorax mobility with the thoracic mobility index, balance with the functional reach test, walking distance with the 2-min walk test, and quality of life with the Scoliosis Research Society-22 questionnaire. The length of hospital stay was recorded.
The RG was favored over the MG for improvements from 0 to 1 week for pain. Improvements from 0 to 1 week were significantly better in the RG than the MG group for thorax mobility, balance, and walking distance. Quality of life scores improvements from 0 to 1 week were significantly better in the RG group than in the MG group. The length of hospital stay was significantly shorter in the RG group.
Five days of intensive postoperative rehabilitation were superior to early mobilization in reducing the length of hospital stay, and in improving physical and functional outcomes following scoliosis surgery.
Five days of intensive postoperative rehabilitation were superior to early mobilization in reducing the length of hospital stay, and in improving physical and functional outcomes following scoliosis surgery.
Ulnar shortening osteotomy (USO), as its name implies, is used to shorten the ulna. It subsequently tightens the triangular fibrocartilage complex (TFCC) and ulnar wrist. TFCC foveal insertion is a primary stabilizer of the distal radioulnar joint. It is unclear whether USO is effective in TFCC foveal injuries. The purpose of this study was to review the clinical outcomes of ulnar shortening osteotomies with and without TFCC foveal injuries.
We retrospectively reviewed patients with ulnar wrist pain treated with USO and wrist arthroscopy including the distal radioulnar joint (DRUJ). Sixty-five patients were included in this study. An algorithm was used to guide surgical decision-making. After arthroscopic confirmation of ulnar impaction syndrome, we performed USO with a locking compression plate (mean length of shortening, 2.7mm; range, 1-7.5mm). The flattened TFCC disc due to ulnar shortening was confirmed arthroscopically. If the DRUJ was unstable after USO, we repaired the TFCC foveal insertion.
There were 32 post-traumatic and 33 idiopathic cases. We detected TFCC disc injuries in 34 wrists and TFCC foveal injuries in 33 wrists; both types were found in 15 wrists. TFCC foveal injuries were not significantly correlated with patient age, history of trauma, or clinical outcome. Most patients showed good clinical outcomes; 31 of 65 patients had preoperative DRUJ instability, with a significant number having foveal but not disc injuries.
USO achieved reasonable outcomes, even in patients with TFCC foveal injuries. In cases demonstrating ulnar impaction, USO should be prioritized over TFCC repair.
USO achieved reasonable outcomes, even in patients with TFCC foveal injuries. In cases demonstrating ulnar impaction, USO should be prioritized over TFCC repair.
The guidelines presented herein provide recommendations for the management of patients with lateral epicondylitis of the humerus. These recommendations are endorsed by the Japanese Orthopaedic Association (JOA) and Japan Elbow Society.
The JOA lateral epicondylitis guideline committee revised the previous guidelines on the basis of the "Medical Information Network Distribution Service Handbook for Clinical Practice Guideline Development 2014", which emphasized the importance of the balance between benefit and harm, and proposed a desirable method for preparing clinical guidelines in Japan. These guidelines consist of 11 clinical questions (CQs), 9 background questions (BQs), and 3 future research questions (FRQs). For each CQ, outcomes from the literature were collected and evaluated systematically according to the adopted study design.
The committee proposed recommendations for each CQ by determining the level of evidence and assessing the consensus rate. Physical therapy was the best recommendation with the best evidence. The BQs and FRQs were answered by collecting evidence based on the literature.
The guidelines presented herein were reviewed systematically, and recommendations were proposed for each CQ. These guidelines are expected to be widely used not only by surgeons or physicians but also by other healthcare providers, such as nurses, therapists, and athletic trainers.
The guidelines presented herein were reviewed systematically, and recommendations were proposed for each CQ. These guidelines are expected to be widely used not only by surgeons or physicians but also by other healthcare providers, such as nurses, therapists, and athletic trainers.In most animals, the oocyte is the largest cell by volume. The oocyte undergoes a period of large-scale growth during its development, prior to fertilization. At first glance, tissues that support the development of the oocyte in different organisms have diverse cellular characteristics that would seem to prohibit functional comparisons. However, these tissues often act with a common goal of establishing dynamic forms of two-way communication with the oocyte. We propose that this bidirectional communication between oocytes and support cells is a universal phenomenon that can be directly compared across species. Specifically, we highlight fruit fly and mouse oogenesis to demonstrate that similarities and differences in these systems should be used to inform and design future experiments in both models.We present a retrospective 21-year follow-up of two sisters with X-linked biallelic CAG expansions in the androgen receptor (AR) gene causing Kennedy disease. Two sisters inherited CAG expansions from their mother who was a carrier and their father who had Kennedy disease. Genetic testing revealed alleles comprising 43/45, and 43/43 CAG repeats in the younger and older sister, respectively. They were referred to a neurologist for further evaluation. Both reported similar symptoms with chronic backache, pain and cramps in upper- and lower extremities, and fasciculations in their faces and extremities. Neurological examination demonstrated postural hand tremor in both and EMG revealed chronic neurogenic changes. Reevaluation of the patients at ages 74 and 83 showed slight progression of clinical manifestations. As opposed to male patients, these two females showed minimal disease progression and have maintained normal level of function into old age.Extensive research has demonstrated racial disparities, particularly among Black individuals, in both presentation and course of psychosis spectrum disorders. Few studies, however, have examined racial differences in the clinical high-risk (CHR) phase of illness. It is unclear if functional deficits seen in association with CHR symptoms generalize to marginalized racial groups, or whether race may play a role in the link between symptoms and functioning. In a sample of youth at CHR (N = 46), the present study examined the effect of race (Black and White represented in this sample) on the relation between CHR symptoms and social/role functioning. Race had a moderating effect on the relation between CHR symptoms and social functioning for total positive symptom score (p less then .04, f2 = 0.10). UBCS039 Although positive symptoms were associated with worse social functioning for White participants, no association was found for Black participants. Follow up analyses indicated suspiciousness was a statistically significant predictor of social functioning for White participants but was unrelated to functioning for Black participants. Results may be indicative of phenomenon experienced by individuals within racial minority groups (e.g., "healthy suspiciousness") or potential measurement validity concerns. Findings further the understanding of racial differences in the CHR phase of illness among White and Black youth and highlight limitations of the existing CHR literature and assessment tools for diverse youth.Predictive and prognostic models hold great potential to support clinical decision making in oncology and could ultimately facilitate a paradigm shift to a more personalised form of treatment. While a large number of models relevant to the field of oncology have been developed, few have been translated into clinical use and assessment of clinical utility is not currently considered a routine part of model development. In this narrative review of the clinical evaluation of prediction models in oncology, we propose a high-level process diagram for the life cycle of a clinical model, encompassing model commissioning, clinical implementation and ongoing quality assurance, which aims to bridge the gap between model development and clinical implementation.
Homepage: https://www.selleckchem.com/products/ubcs039.html
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